Call: 01392 678082

Established 2004

Ruddlesden geotechnical

Ruddlesden geotechnical provides ground investigation, geotechnical consultancy and contamination assessment services.

Based in Exeter, but covering the whole of the UK, albeit primarily concentrated in the South West, Ruddlesden geotechnical was formed in 2004.

Ruddlesden geotechnical works on behalf of a wide client base, including local, regional and national housing developers, housing associations, commercial developers, building contractors, structural and civil engineers, architects, building consultants, quantity surveyors, local authorities and private individuals.

Development projects range from single dwellings and extensions to large housing estates, multi-storey flats, offices, industrial units, roads, slopes, schools, hospitals and basements.

The services and projects listed on this web-site provide an indication of those undertaken by Ruddlesden geotechnical, but others are carried out. If your requirement is not readily identifiable on this web-site, please contact us as we may still be able to help you.

  • AGS
  • Constructionline
  • CSCS
  • SMAS
  • ECFC trust

Latest news

Recent projects

  • Latest news

    13 Jul 2026

    Geoff’s birthday treats!

    We recently celebrated a special birthday of Geoff Davis, in a place that is close to his heart: the East Devon coast.He treated us to his knowledge of the geology and landslide systems in the area, and we treated him to an ice cream on the beach!

    Geoff’s birthday treats!
    Geoff’s birthday treats!

  • Recent projects

    Ground Conditions Chapter for Environmental Statement for Large Residential Development

    Ruddlesden geotechnical produced a ground conditions chapter for an Environmental Statement (ES) as part of the Environmental Impact Assessment (EIA) for a new, large residential development on the outskirts of Dawlish, Devon. Following the scoping assessment, which was agreed between Ruddlesden and the local authority, a Phase 1 Preliminary Geotechnical and Contamination Assessment was undertaken to provide information on the baseline ground conditions at the site. This information was used to assess how the proposed development would affect the ground conditions in the short term (construction stage) and long term (developed stage). Where the proposals were found to have a negative impact on the baseline ground conditions, mitigation measures were proposed to reduce the impact to acceptable levels.

  • Recent projects

    Subsidence Investigation, Exeter

    A void was encountered during construction works beneath an existing residential property in Exeter. It was feared that the void might compromise the integrity of the property, as the existing foundations were no longer being supported. Ruddlesden geotechnical were called out on behalf of a consulting engineer to investigate the ground conditions, to assess possible reasons for movement and to provide appropriate remedial recommendations. The Phase 1 geotechnical assessmentindicated that this was likely to be due to a damaged rainwater downpipe, which had resulted in the wash-out of loose fines within made ground, associated with the basement of a historical property, present prior to the construction of the Victorian terrace. A subsequent geotechnical investigation, which comprised hand-held window samples and dynamic probes within the footprint of the existing building, indicated that the made ground was in the region of 3m thick and was present beneath the central and eastern-half of the building. Ruddlesden recommended that, to guarantee the serviceability and integrity of the existing building, the foundations be underpinned on to the underlying breccia using cantilevered mini-piles or the made ground be consolidated using a low-mobility grout.

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